All Carburetors have been totally disassembled, assessed for what is required for replacement and repairs, then bead blasted, and ultrasonically cleaned.
I only use quality repair kits as I found out early on the cheap kits for sale give nothing but problems. I source miscellaneous items either from genuine or quality aftermarket. I check all internal parts that are not in carburetor kits and if I deem them okay they are cleaned and refitted to carburetor, this is to try and keep costs down and also some items can no longer be purchased.
After carburetors are fully reassembled I bench sync them and carry out a leak test. I do my best to make these right so they can be fitted to bike and started with only minor adjustment needed.